Dust-collector



(N0 Moder.) 2 Sheets-Sheet 1.

J. MILLS;

. DUST GOLLEGTOR. N0. 258,099. Patented May 16, 1882.

WTN S K Q |N NT -F\- (Np Model.) 2 Sheets-Sheet 2.

J. MILLS.

. DU'STGOLLBGTOR. I NO. 258,099. Patented May 16. 1882.

' UNITED I STATES PATENT @FFICE. I

JONATHAN MILLS, OF CHICAGO, ILLINOIS.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 258,099, dated May 16,1882 Application filed April 5, 1880. (X model.)

thereof, reference being bad to the accompa nying drawings,and to theletters of reference marked thereon, which form a part of thisspecification.

My invention relates to devices forcollecting the dust from purifiers inflouring-mills;

and it consists essentially in a revolving cloth covered reel and adead-air chamber within said reel exposed to an air-current from thepurifier, whereby the dust borne by such current is deposited on saidcloth as the air escapes through the same, and is carried in its furtherprogress out of such air-current to said still-air space, where the dustis detached from the clothand falls.

In the drawings, Figure 1 is a side elevation of a machine embodyingmyinvention. Fig. 2 is a longitudinal Vertical section. Fig. 3 is afront endview, Fig.4 is a rear end view, and Fig. 5 a central transversevertical section, thereof.

A represents a cylindric reel having circumferential ribs B B, to theinner faces of which is secured the cloth 0. This cloth iscoarsely-woven flannel or other suitable material having meshes adaptedto allow the air to freely pass through it, but also calculated toarrest the dust. In the flannel the open meshes and numerous free fiberslying across the meshes admirably accomplish the end desired. The reelis supported in a frame, F, by means of external rollers, I), mounted onshafts d, which turn in bearin gs secured to the frameuprights. One ofthe shafts d is provided with a pulley, P, by which the reel is driven.Withshown. The. inclined sides T of the trough rise into proximity withthe cylindric cloth 0, thereby cutting off from the general interior ofthe reel a chamber, I, or, in other words, making two chambers, I and M,within the reel. At the open end of the reel is located aparticylindrical stationary. housing, J, con centric with andclose to thereel, and rising to connect with the upper edges of the outwardextension,T, of the trough. Said trough, extension has the head N, anddesirablyt-he partition 1 which may preferably rise to thecontiguousreel-rib B, practically closing the chamber I. At the bottomof the trough T is located the worm-conveyer, 7, extending from the headN along the bottom of thetrough and through the disk H to the end of thehori= zontal spout i. The worm is run by the band 1), connecting thepulleys p 19, as shown in Fig. 1. Thcspont 8 leads in any desireddirection and to any desired point from the trougheXtension orhorizontal spout i. The space between the disk H and the annular head Hof the reelis closed suffioiently by a strip of lambskin with the woolon, applied as a packing to the joint, and generally the spaces betweenmoving and stationary parts of the apparatus may be similarly closedeffectively againstthe escape of dust; or any other form of packing maybe used. Special provision is made to more effectively cut off thechamber I from the air-blast by means of the wings T of the trough Textending laterallya little more than the distance between the adjacentrails r, and providing the inner surface of the reel oppo site the railswith longitudinal closing-strips 1, some one of which will at all timesclosethe spaces between the extensions T and the reelcloth.

K is a knocker pivotally secured by the arm a to the frame F in positionto strike on the rib B at the top of the reel, and L L are liftersfastened to the rib B to raise the knocker as the reel is turned beneathit. Preferably the lifters are placed to let the knocker K fall atthejunction of the longitudinal rails r with the rib B, so that thejarring eifect of the blow caused by the fall of the knocker will becarried by said rail from one rib to another. The rails 1' being incontact with and supporting the cloth 0, the effect of the blow of theknocker will be felt upon the cloth throughout the length of the rails.

In the operation of the machine the housing J will be connected toreceive the air-current from the purifiers, which, with its burden ofdust, will thus be directed into the interior of the chamber M of thereel'A. The air will vfind escape through the meshes of the cloth-C butthe dust will be arrested thereby, and form a body accumulated on itsinner surface. As the reel is rotated that portion of the cloth thusexposed to the air-current and receiving the deposit of dust in thechamber M is gradually carried over the t-rough'l and chamber I; Here itis jarred by the knocker K, and the dust adhering thereto is dislodged.This chamber being cut off from the air-current, thedust falls intothetrou-gh, and the unburdenedcloth advances over the-trough to be againexposed and to again accumulate a body of dustin the chamber" Idesignate the chamber M a blast-chamber, whether the air-current beforced throughthe' same by the fan of the purifiers or drawn through itby a suction-fan. ldesignate th-echamberlaWlead-air or stillair chamber,and" require only that'the air therein be sufficiently quiet to permitthe dust to fall or. settlein the-trough.

ThewormsWobviously serves to convey away the dust dropped into thetrough as fast as it accumulates, andthe end extension, T, of the troughis a convenient and available'reeeptaele for the sweepin gs of the mill.

While I prefer and have shown the traveling cloth attached to a rotatingreel, I do not limit myself to such device for moving the cloth. It maybe loosely supported on rollers, for example, and advanced from theblastchamber to the still-air chamber by rotating one or more of thesupporting-rollers; nor do I limit myself (except in the specific claimtherefor) to the location of the dead-air chamber within the reel. v

Having thus described my invention, 1 claim- 1. In combination with thestill-air chamber and the moving cloth of a dust-collector, the conveyerW, substantially as and for the purposes set forth.

2. A rotating reel bearing a dust-cloth, in combination with ablast-chamber and a stillair chamber within said reel, as described.

3. In combination with a reel bearing a dustcloth, a hopper arrangedwithin the reel 'to separate the general interior thereof into twounconnected chambers, substantiallyas and for the purposes set forth.

In testimony that I claim the foregoing as my invention, I affix mysignature in presence ot'two witnesses.

JONATHAN MILLS.

Witnesses:

M. E. DAYTON, J ESSE 00X, J r.

